Three-way electromagnetic valve

Abstract

The invention discloses a three-way electromagnetic valve, and relates to the technical field of three-way electromagnetic valves. The three-way electromagnetic valve comprises a valve main body, a direction adjusting type communication part which flexibly adjusts the three communication directions of the direction adjusting type communication part according to the pipeline layout is arranged outside the valve main body, and the direction adjusting type communication part comprises three kidney-shaped through grooves formed in the valve main body in the circumferential direction at equal intervals and valve branch pipes connected into the kidney-shaped through grooves in a sliding mode. By means of the combination of the valve branch pipes and the kidney-shaped through grooves in the direction-adjusting type communication part, the angle between the valve branch pipes and the valve body can be flexibly adjusted, locking is conducted through mortise lock assemblies, and therefore the direction-adjusting type communication part can be used for quickly adjusting the angle between the valve branch pipes and the valve body. The mounting flexibility and adaptability are greatly improved, different pipeline arrangements are adapted, the quick communication with and separation from an external pipeline can be realized through the connecting and dismounting mechanism, the mounting and dismounting can be completed only through simple operation, the mounting and dismounting process is simplified, and the precision and high efficiency of dismounting are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of three-way solenoid valves, in particular to a three-way solenoid valve. Background Art

[0002] The three-way solenoid valve is a device used for fluid control. It has three channels and two working states (open / closed or flow direction switching). In the working state, the solenoid valve switches the position of the valve core through the action of the electromagnet to achieve fluid channel switching, switch control or flow regulation. It is commonly used for the control of media such as gas, liquid, and steam, and is widely used in industrial, automation control, hydraulic, pneumatic and other systems.

[0003] Existing three-way solenoid valves usually adopt a T-type or Y-type structure, in which the angles and connection methods of each branch pipe are fixed and cannot be flexibly adjusted according to actual needs. This means that if the pipeline layout changes, the entire valve body needs to be replaced or a new solenoid valve needs to be reinstalled. In a complex or frequently changing working environment, the fixed-angle three-way solenoid valve limits the flexibility and adaptability of the installation, increasing the project cost and installation difficulty.

[0004] In addition, when the electromagnetic three-way valve is used in a fluid control scenario at a specific working stage (such as in a food or beverage production line for fluid distribution and regulation, liquid mixing in a beverage formula, and raw material delivery, in order to ensure hygiene and avoid cross contamination, these valves need to be removed for thorough cleaning after the work is completed), it needs to be disassembled after the work is completed for maintenance and cleaning, that is, it can be stably fixed on the equipment during work, and it needs to be easily disassembled after the work is completed. However, the existing three-way solenoid valve is usually connected to the pipeline port by a clamp or threaded connection. Although this connection method can ensure the sealing and stability of the valve, it is relatively cumbersome to disassemble, which increases the difficulty of disassembly and installation. Summary of the invention

[0005] The present invention provides a three-way solenoid valve, which solves the technical problems that the existing three-way solenoid valves usually adopt a T-type or Y-type structure, the angles and connection methods of each branch pipe are fixed and cannot be flexibly adjusted, which increases the engineering cost and installation difficulty; and when the solenoid three-way valve is used in specific work scenarios that require regular disassembly and cleaning (such as fluid distribution and mixing in food or beverage production lines), the traditional clamp or threaded connection method is cumbersome to disassemble, which increases the difficulty of maintenance and cleaning and affects work efficiency.

[0006] A three-way solenoid valve provided by the present invention comprises a valve body, wherein the outside of the valve body is provided with an adjustable connecting portion for flexibly adjusting its three connecting directions according to the pipeline layout, the adjustable connecting portion comprises three waist-shaped through grooves equidistantly arranged on the valve body in the circumferential direction, a valve branch pipe slidably connected in the waist-shaped through groove, an arc-shaped baffle plate fixedly connected to the outside of the valve branch pipe and attached to the outer wall of the valve body, and a latch assembly jointly arranged between the valve body and the arc-shaped baffle plate for limiting and locking the arc-shaped baffle plate, and each of the valve branches is provided with a connection and disconnection mechanism for quickly connecting with an external pipeline at one end away from the valve body.

[0007] In a possible implementation, the connecting and disassembling mechanism includes a joint pipe fixedly connected to the end of the valve branch pipe and communicated with the valve branch pipe, and a sliding sleeve slidably arranged on the outside of the joint pipe, a side of the joint pipe away from the valve branch pipe is fixedly connected with a plurality of elastic arc-shaped strips at equal intervals in the circumferential direction, an inner wall of the elastic arc-shaped strip is fixedly connected with an arc-shaped clamping strip, an elastic sealing ring block is fixedly connected to the joint pipe and the arc-shaped inner side of the elastic arc-shaped strip, an extrusion component for squeezing the elastic arc-shaped strip for multiple gatherings so that the elastic sealing ring block is deformed and then wraps the external pipe is jointly arranged between the sliding sleeve and the elastic arc-shaped strip, and a guide limit component for limiting the movement path of the sliding sleeve is jointly arranged between the joint pipe and the sliding sleeve.

[0008] In a possible implementation, the latch assembly includes a plurality of limiting holes equidistantly arranged on the upper end surface of the arc baffle along the curvature of the arc baffle, a ring frame slidably connected to the outside of the valve body by spline cooperation, three limiting columns corresponding to the arc baffle and equidistantly fixedly connected to the lower end surface of the ring frame for cooperating with the limiting holes, and a ring ring rotatably connected to the upper part of the ring frame and movably sleeved on the outside of the valve body, a circular ring plate is fixedly connected to the upper part of the outer wall of the valve body, a top spring that contacts the upper part of the ring ring is fixedly connected to the lower end surface of the circular ring plate, two C-shaped guide grooves symmetrically distributed in the center are arranged on the outer wall of the valve body, and a guide column slidably arranged in the C-shaped guide groove is fixedly connected to the inner wall of the ring ring.

[0009] In one possible implementation, the arc-shaped inner wall of the ring is provided with a cylindrical groove extending along its own radial direction, and the outer wall of the valve body is provided with a groove, a limit spring is fixedly connected in the cylindrical groove, and a positioning bead that cooperates with the groove is fixedly connected to one end of the limit spring close to the center of the ring.

[0010] In a possible implementation, an outer wall of the valve branch pipe located in the inner cavity of the valve body is fixedly connected to an inner arc plate attached to the inner wall of the valve body.

[0011] In one possible implementation, the extrusion assembly includes a wedge-shaped rail fixedly connected to the outside of the elastic arc-shaped strip, and a plurality of top columns corresponding to and cooperating with the wedge-shaped rail are fixedly connected to the inner wall of the sliding sleeve at equal intervals, and an arc block is fixedly connected between the elastic arc-shaped strip and the wedge-shaped rail for cooperating with the top column again to enable the elastic arc-shaped strip to perform a secondary gathering movement.

[0012] In a possible implementation, the guide assembly includes a U-shaped groove opened on the outer wall of the joint pipe and a sliding column fixedly connected to the inner wall of the sleeve and slidably arranged in the U-shaped groove, and a return spring is fixedly connected between the sleeve and the valve branch pipe.

[0013] In a possible implementation, one end of the joint pipe away from the valve branch pipe is fixedly connected to an annular baffle plate through a connecting column for cooperating with the sliding sleeve to close the elastic arc-shaped strip plate.

[0014] In a possible implementation, annular sealing grooves are provided on the outer wall of the valve body above and below the waist-shaped through groove, and two elastic arc-shaped sealing strips slidably disposed in the annular sealing grooves are symmetrically fixedly connected to the arc-shaped inner wall of the arc-shaped baffle.

[0015] It can be seen from the above technical scheme that the present invention has the following advantages: In the present invention, through the combination of the valve branch pipe and the waist-shaped through groove in the adjustable connecting part, the valve branch pipe can be flexibly rotated to adjust the angle between it and the valve body, and the adjusted angle is locked and limited by the latch assembly, which can adapt to different pipeline arrangements, greatly improves the flexibility and adaptability of installation, and is particularly suitable for complex or frequently changing working environments.

[0016] In the present invention, the top column in the connection and disassembly mechanism cooperates with the wedge-shaped rail and the arc block, so that the elastic sealing ring block can tightly wrap the outside of the pipeline, and is connected to the pipeline by being clamped on the pipeline by the arc-shaped clamping strip. When disassembling, the pipeline can be quickly disassembled by simply separating the top column from the wedge-shaped rail and the arc block. This simple plug-in connection simplifies the disassembly process, can reduce human errors, and ensures that each disassembly can be completed quickly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the three-way solenoid valve provided by the present invention.

[0019] Figure 2 This is a partial structural schematic diagram of the latch assembly provided by the present invention.

[0020] Figure 3 This is a schematic diagram of the connection structure between the valve branch pipe and the waist-shaped through groove provided by the present invention.

[0021] Figure 4 This is a schematic cross-sectional view from a top view of the positioning bead and groove connection structure provided by the present invention.

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting and disassembling mechanism provided by the present invention.

[0023] Figure 6 This is a partial cross-sectional structural schematic diagram of the connecting and disassembling mechanism provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the connecting and disassembling mechanism provided by the present invention from a front viewing angle.

[0025] Among them, the above-mentioned drawings include the following figure marks: 1. valve body; 2. adjustable connecting part; 21. waist-shaped through groove; 22. valve branch pipe; 23. arc-shaped baffle plate; 24. latch assembly; 241. limit hole; 242. ring frame; 243. limit column; 244. ring; 245. top spring; 246. C-shaped guide groove; 247. guide column; 3. connection and disassembly mechanism; 31. joint pipe; 32. sliding sleeve; 33. elastic arc-shaped strip plate; 34. arc-shaped clamping strip; 35. elastic sealing ring block; 36. extrusion assembly; 361. wedge rail; 362. top column; 363. arc block; 37. guide limit assembly; 371. U-shaped groove; 372. sliding column; 4. groove; 5. positioning bead; 6. inner arc plate; 7. annular baffle plate; 8. annular sealing groove. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1 and Figure 3The present invention provides a technical solution: a three-way solenoid valve, comprising a valve body 1, the valve body 1 is provided with an adjustable connecting part 2 on the outside thereof, which can flexibly adjust its three connecting directions according to the pipeline layout, the adjustable connecting part 2 comprises three waist-shaped through grooves 21 equidistantly arranged on the valve body 1 in the circumferential direction, a valve branch pipe 22 slidably connected in the waist-shaped through groove 21, an arc-shaped baffle plate 23 fixedly connected to the outside of the valve branch pipe 22 and attached to the outer wall of the valve body 1, and a plug lock assembly 24 commonly provided between the valve body 1 and the arc-shaped baffle plate 23 for limiting and locking the arc-shaped baffle plate 23, the outer wall of the valve branch pipe 22 located in the inner cavity of the valve body 1 is fixedly connected with a plug lock assembly 24 attached to the valve body 1 The inner arc plate 6 on the inner wall is combined with the arc baffle plate 23 to respectively contact the inner and outer walls of the valve body 1 to enhance the installation stability of the valve branch pipe 22. The end of each valve branch pipe 22 away from the valve body 1 is provided with a connection and disassembly mechanism 3 for quick connection with an external pipeline. The outer wall of the valve body 1 and above and below the waist-shaped through groove 21 are provided with an annular sealing groove 8. The arc-shaped inner wall of the arc-shaped baffle plate 23 is symmetrically fixedly connected with two elastic arc-shaped sealing strips slidably set in the annular sealing groove 8. The elastic arc-shaped sealing strip and the annular sealing groove 8 cooperate with each other to enhance the connection sealing between the arc-shaped baffle plate 23 and the valve body 1. It should be noted that an elastic sealing layer can also be provided on the part of the arc-shaped inner wall of the arc-shaped baffle plate 23 located between the elastic arc-shaped sealing strips symmetrically set up and down to further enhance the connection sealing. It is also possible to optionally provide elastic sealing strips (not shown in the figure) on the left and right sides of the arc-shaped inner wall of the arc-shaped baffle plate 23, and evenly open linear sealing grooves (not shown in the figure) on the outer wall of the valve body 1, so that the elastic sealing strips and the linear sealing grooves cooperate with each other to further enhance the connection sealing between the arc-shaped baffle plate 23 and the valve body 1.

[0028] See also Figure 1 and Figure 2 In this embodiment, the latch assembly 24 includes a plurality of limiting holes 241 equidistantly arranged on the upper end surface of the arc baffle 23 along the arc of the arc baffle 23, a ring frame 242 slidably connected to the outside of the valve body 1 by spline matching, three limiting columns 243 corresponding to the arc baffle 23 and equidistantly fixedly connected to the lower end surface of the ring frame 242 for matching with the limiting holes 241, and a ring ring 244 rotatably connected to the upper part of the ring frame 242 and movably sleeved on the outside of the valve body 1, a circular ring plate is fixedly connected to the upper part of the outer wall of the valve body 1, and a top spring 245 that contacts the upper part of the ring ring 244 is fixedly connected to the lower end surface of the circular ring plate, and two C-shaped guide grooves 246 symmetrically distributed in the center are arranged on the outer wall of the valve body 1, and a guide column 247 slidably arranged in the C-shaped guide groove 246 is fixedly connected to the inner wall of the ring ring 244.

[0029] See also Figure 4The arc-shaped inner wall of the ring 244 is provided with a columnar groove extending along its own radial direction, and the outer wall of the valve body 1 is provided with a groove 4, in which a limit spring is fixedly connected, and one end of the limit spring close to the center of the ring 244 is fixedly connected with a positioning bead 5 that cooperates with the groove 4.

[0030] Before connecting with the pipeline for installation, the angular positions of the three valve branches 22 are adjusted according to the specific layout of the pipeline: first, manually pull the ring ring 244 upward to move it upward, and the ring ring 244 then drives the guide column 247 to slide in the vertical section of the C-shaped guide groove 246. At the same time, the ring ring 244 will also drive the limit column 243 to move upward through the ring frame 242. When the guide column 247 moves up to the upper horizontal section of the C-shaped guide groove 246, the ring ring 244 is rotated again to make the guide column 247 enter the upper horizontal section of the C-shaped guide groove 246, and then the ring ring 244 is loosened, and the valve branch pipe 22 is rotated along the waist-shaped through groove 21 until the three valve branch pipes 22 are rotated and adjusted to the appropriate position; then the ring ring 244 is rotated in the opposite direction to drive the guide column 247 to move from the upper horizontal section of the C-shaped guide groove 246 to At the vertical section position, the ring ring 244 moves downward quickly under the pushing of the top spring 245, and then drives the ring frame 242 and the limiting column 243 to move downward until the limiting column 243 moves downward and is inserted into the limiting hole 241 located directly below it, locking the arc baffle 23, thereby completing the limiting of the valve branch pipe 22 after the adjusted position. Then the ring ring 244 is rotated to drive the guide column 247 from the vertical section of the C-shaped guide groove 246 to the lower horizontal section until it rotates and contacts the side groove wall of the lower horizontal section of the C-shaped guide groove 246. At this time, the ring ring 244 also drives the positioning bead 5 to move to the position of the groove 4. The positioning bead 5 is embedded in the groove 4 under the pushing of the limiting spring to ensure that the ring ring 244 will not rotate at will, thereby indirectly ensuring the stability of the connection between the limiting column 243 and the limiting hole 241.

[0031] When the position of the valve branch pipe 22 needs to be adjusted again, it is only necessary to manually twist the ring 244 slightly to make the ring 244 drive the positioning bead 5 to move out of the groove 4, and then make the ring 244 drive the guide column 247 to move to the vertical section position of the C-shaped guide groove 246, and then repeat the above steps of pulling the ring 244 up.

[0032] See also Figure 5 , Figure 6 and Figure 7In this embodiment, the connecting and disassembling mechanism 3 includes a joint pipe 31 fixedly connected to the end of the valve branch pipe 22 and communicating with the valve branch pipe 22, and a sliding sleeve 32 slidably sleeved on the outside of the joint pipe 31. A side of the joint pipe 31 away from the valve branch pipe 22 is fixedly connected to a plurality of elastic arc strips 33 at equal intervals in the circumferential direction. The inner wall of the elastic arc strip 33 is fixedly connected to an arc-shaped clamping strip 34. The joint pipe 31 and the arc-shaped inner side of the elastic arc strip 33 are fixedly connected to an elastic sealing ring block 35. The sliding sleeve 32 An extrusion assembly 36 is provided between the elastic arc strip 33 for squeezing the elastic arc strip 33 for multiple gatherings so that the elastic sealing ring block 35 is deformed and then wraps the external pipe. A guide assembly 37 is provided between the joint pipe 31 and the sleeve 32 for limiting the movement path of the sleeve 32. The end of the joint pipe 31 away from the valve branch pipe 22 is fixedly connected to an annular baffle 7 for cooperating with the sleeve 32 to close the elastic arc strip 33 through a connecting column.

[0033] See also Figure 5 , Figure 6 and Figure 7 The extrusion assembly 36 includes a wedge-shaped rail 361 fixedly connected to the outside of the elastic arc-shaped strip 33, and a plurality of top columns 362 corresponding to and cooperating with the wedge-shaped rail 361 are fixedly connected to the inner wall of the circumference of the sliding sleeve 32 at equal intervals. The elastic arc-shaped strip 33 and the wedge-shaped rail 361 are jointly and fixedly connected with an arc block 363 for cooperating with the top column 362 again to enable the elastic arc-shaped strip 33 to perform a second gathering movement.

[0034] See also Figure 6 The guide assembly 37 includes a U-shaped groove 371 opened on the outer wall of the joint pipe 31 and a sliding column 372 fixedly connected to the inner wall of the sliding sleeve 32 and slidably arranged in the U-shaped groove 371. A return spring is fixedly connected between the sliding sleeve 32 and the valve branch pipe 22.

[0035] The initial state of the sliding sleeve 32 is to squeeze the elastic arc-shaped strip 33 to make it in a gathered state, and the sliding column 372 is located in the vertical section of the U-shaped groove 371 away from the valve branch pipe 22. First, the sliding sleeve 32 is rotated to drive the sliding column 372 to enter the horizontal section of the U-shaped groove 371, and then the sliding sleeve 32 is pushed horizontally toward the valve body 1 to move. The sliding sleeve 32 drives the sliding column 372 to move in the horizontal section of the U-shaped groove 371 until the sliding column 372 moves to the vertical section of the U-shaped groove 371 close to the valve branch pipe 22, and then the sliding sleeve 32 is rotated in the opposite direction to make the sliding column 372 enter the vertical section of the U-shaped groove 371 close to the valve branch pipe 22.

[0036] At this time, the connecting and disassembling mechanism 3 is in a state of waiting for connection, and then the external pipe is inserted into the elastic sealing ring block 35, and then the sliding sleeve 32 is manually twisted to drive the sliding column 372 to slide into the horizontal section of the U-shaped groove 371, and then the return spring in the compressed state pushes the sliding sleeve 32 to move quickly in the direction away from the valve branch pipe 22, and the sliding sleeve 32 drives the push column 362 to contact the inclined surface of the wedge rail 361 and then squeeze each other, so that the elastic arc strip 33 is deformed and moves toward the axis direction of the joint pipe 31, and the elastic arc strip 33 squeezes the elastic sealing ring block 35 to deform it, and then tightly wraps it on the outer wall of the external pipe.

[0037] When the sliding post 372 moves to the vertical section position of the U-shaped groove 371 away from the valve branch pipe 22, the return spring in the torsion state will reset and reverse the torsion, thereby driving the sliding sleeve 32 to rotate. The sliding sleeve 32 now drives the sliding post 372 to enter the vertical section of the U-shaped groove 371 away from the valve branch pipe 22. At the same time, the sliding sleeve 32 in circumferential rotation will also drive the top column 362 to contact the arc surface of the arc block 363. The top column 362 and the arc block 363 then squeeze each other to make the elastic arc strip plate 33 gather again, so that the elastic sealing ring block 35 is deformed again and tightly wrapped around the outside of the pipeline. The elastic arc strip plate 33 drives the arc clamping strip 34 to be clamped on the annular protrusion outside the external pipeline. At the same time, the sliding sleeve 32 also touches the annular baffle 7, so that the elastic arc strip plate 33 can be closed, and the quick connection between the connecting and disassembling mechanism 3 and the external pipeline can be completed.

[0038] When disassembly is required: just twist the sleeve 32 in the opposite direction to drive the slide post 372 to slide from the vertical section of the U-shaped groove 371 to the horizontal section, and then push the sleeve 32 to move horizontally to drive the slide post 372 into the horizontal section of the U-shaped groove 371, so that the top column 362 is separated from the arc block 363 and the wedge rail 361 in turn, and then the elastic arc strip 33 expands outward and resets, stops squeezing the elastic sealing ring block 35, and at the same time drives the arc clip 34 to move away from the pipe, so that the pipe can be quickly removed from the joint pipe 31 and separated.

[0039] During operation, the angles of the three valve branches 22 and the valve body 1 are adjusted according to the requirements of the pipeline layout. After adjusting to the appropriate position, the latch assembly 24 is manually triggered to lock and limit the valve branch 22. Then, the external pipeline is inserted into the connecting and disassembling mechanism 3, and the connecting and disassembling mechanism 3 is used to quickly connect the external pipeline and the valve branch 22. When disassembly is required, it is only necessary to control the connecting and disassembling mechanism 3 to run in reverse to quickly disassemble the pipeline and the valve branch 22.

[0040] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-way solenoid valve, comprising a valve body, characterized in that: The valve body is provided with an adjustable connection part on the outside thereof, which can flexibly adjust its three connection directions according to the pipeline layout; The direction-adjustable connecting portion includes three waist-shaped through grooves equidistantly arranged on the valve body in the circumferential direction, a valve branch pipe slidably connected to the waist-shaped through grooves, an arc-shaped baffle plate fixedly connected to the outside of the valve branch pipe and attached to the outer wall of the valve body, and a latch assembly commonly arranged between the valve body and the arc-shaped baffle plate for limiting and locking the arc-shaped baffle plate; Each valve branch pipe is provided with a connection and disconnection mechanism for quickly connecting with an external pipeline at one end away from the valve body. The connection and disconnection mechanism includes a joint pipe fixedly connected to the end of the valve branch pipe and communicating with the valve branch pipe, and a sliding sleeve slidably mounted outside the joint pipe.

2. A three-way solenoid valve according to claim 1, characterized in that: A plurality of elastic arc strips are fixedly connected to one side of the joint pipe away from the valve branch pipe at equal intervals in the circumferential direction, an arc-shaped clamping strip is fixedly connected to the inner wall of the elastic arc strip, an elastic sealing ring block is fixedly connected to the joint pipe and the arc-shaped inner side of the elastic arc strip, an extrusion component for squeezing the elastic arc strip for multiple gatherings so that the elastic sealing ring block is deformed and then wraps the external pipe is provided between the sliding sleeve and the elastic arc strip, and a guide limit component for limiting the movement path of the sliding sleeve is provided between the joint pipe and the sliding sleeve.

3. A three-way solenoid valve according to claim 1, characterized in that: The latch assembly includes a plurality of limiting holes equidistantly arranged on the upper end surface of the arc-shaped baffle along the curvature of the arc-shaped baffle, a ring frame slidably connected to the outside of the valve body by spline cooperation, three limiting columns corresponding to the arc-shaped baffle and equidistantly fixedly connected to the lower end surface of the ring frame for cooperating with the limiting holes, and a ring ring rotatably connected to the upper part of the ring frame and movably sleeved on the outside of the valve body, a circular ring plate is fixedly connected to the upper part of the outer wall of the valve body, a top spring that contacts the upper part of the ring ring is fixedly connected to the lower end surface of the circular ring plate, two C-shaped guide grooves symmetrically distributed on the outer wall of the valve body are arranged, and a guide column slidably arranged in the C-shaped guide groove is fixedly connected to the inner wall of the ring ring.

4. A three-way solenoid valve according to claim 3, characterized in that: The arc-shaped inner wall of the ring is provided with a columnar groove extending along its own radial direction, and the outer wall of the valve body is provided with a groove. A limit spring is fixedly connected in the columnar groove, and a positioning bead matching the groove is fixedly connected to one end of the limit spring close to the center of the ring.

5. The three-way solenoid valve according to claim 1, characterized in that: The outer wall of the valve branch pipe located in the inner cavity of the valve body is fixedly connected with an inner arc plate attached to the inner wall of the valve body.

6. A three-way solenoid valve according to claim 2, characterized in that: The extrusion assembly includes a wedge-shaped rail fixedly connected to the outside of the elastic arc-shaped strip, and a plurality of top columns corresponding to and cooperating with the wedge-shaped rail are fixedly connected to the inner wall of the sliding sleeve at equal intervals. The elastic arc-shaped strip and the wedge-shaped rail are jointly and fixedly connected with an arc block for cooperating with the top column again to enable the elastic arc-shaped strip to perform a secondary gathering movement.

7. A three-way solenoid valve according to claim 2, characterized in that: The guide assembly comprises a U-shaped groove opened on the outer wall of the joint pipe and a sliding column fixedly connected to the inner wall of the sliding sleeve and slidably arranged in the U-shaped groove. A return spring is fixedly connected between the sliding sleeve and the valve branch pipe.

8. A three-way solenoid valve according to claim 2, characterized in that: One end of the joint pipe away from the valve branch pipe is fixedly connected to an annular baffle plate through a connecting column and is used to cooperate with the sliding sleeve to close the elastic arc-shaped strip plate.

9. The three-way solenoid valve according to claim 1, characterized in that: The outer wall of the valve body is provided with annular sealing grooves above and below the waist-shaped through groove, and the arc-shaped inner wall of the arc-shaped baffle is symmetrically fixedly connected with two elastic arc-shaped sealing strips slidably arranged in the annular sealing grooves.

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